hexagonal office where Goodwin stood his ground is a listed building in the yard of the works. Following this the country entered a long period of prosperity, the company with it. In 1830 it was considered to be the largest coal owner and the second-largest iron producer in the East Midlands. By this time the company owned a considerable number of quarries for limestone and mines for coal and iron, and installed a third blast furnace at Codnor Park. In 1830, John Wright withdrew from the partnership and passed his interest in the company to his twenty-four year old son, Francis Wright. Francis worked for his first years at Butterley with William Jessop the younger (the founding partner's son), and then remained very involved with the company until his death in 1873, building the town of Ironville to house Butterley workers, and often travelling for miles every day by horse and carriage from his estate at Osmaston near Ashbourne to Ripley. It was under Francis' leadership that Butterley supplied the iron for St Pancras Station, and after his death, the leadership of the Company passed to many of his descendants. One of the two drainage engines at Pode Hole and the engine in the Pinchbeck Engine land drainage museum were built by Butterley, as were the Scoop wheel pumps. They produced a vast array of goods, from rails for wagonways to heaters for tea urns. Thomas Telford's Caledonian Canal used lock gates and machinery with castings produced at Butterley, and two steam dredgers designed by Jessop. The company also produced steam locomotives, mostly for its own use, but it provided two for the Midland Counties Railway. It produced all the necessary castings for the new railways and two complete lines, the Croydon, Merstham and Godstone Iron Railway and the Cromford and High Peak Railway. A winding engine for the latter exists in working order at Middleton Top near Wirksworth. The company was quick to invest in the new Bessemer process for steel manufacture in 1856, being one of four businesses that took out a licence from Sir Henry Bessemer within a month of his announcing his method. The licences were spread around the country in order to protect the trading interests of the licensees. Notable patents were taken out by the company's manager, Sir John Alleyne. In December 1859 Alleyne patented a method of producing a load-bearing iron beam known